Exploring the freemium business model

"I'd be very surprised if I lost sales as a result. I don't think there were many if any people who downloaded the book instead of buying it. There may have been some who downloaded it instead of checking it out of the library. And there were probably a lot who downloaded it instead of not reading it at all."

He chose to provide a PDF version of my book free for downloading because I wanted to maximize the number of people who had the chance to read it. I thought it was possible this would lead to increased sales because some people would find the book interesting enough to want a bound copy.

Yet the data are inconclusive about making books available for free download'